INFLUENCE OF THE VISCOSITY OF FILLED EPOXY RESINS 
ON THEIR SPREADING ON A HORIZONTAL SURFACE

L. B. Kandyrin, P. V. Surikov, and V. N. Kuleznev

UDC 678.674.4.01

The rheological properties of ED-20-epoxy-resin-based compositions 
filled (10-50 vol.%) with quartz sand, quartz flour, or their mixture 
have been investigated on Reotest-2 and RV-8 rotational viscosimeters. 
The relative viscosity of the filled compositions increased with their 
free volume according to the exponential equation with an exponent 
of 2.6. The compositions began to show an anomaly of viscosity in flowing 
for a content of the filler of more than 40 vol.%; the yield stress 
appeared for 50 vol.%. The rate of spreading of the compositions on 
a horizontal surface decreased with increase in the composition viscosity 
according to the exponential equation with an exponent of 1/8, which 
is similar to that calculated theoretically. The experiments conducted 
allowed calculation of the formula of epoxy-based, self-leveling pouring 
floors.

M. V. Lomonosov Moscow State Academy of Fine Chemical 
Engineering, Moscow, Russia; email: kuleznev@unesco.mitht.rssi.ru. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 76, No. 3, pp. 
81-83, May-June, 2003. Original article submitted November 12, 2002.